Bottle cap or closure.



C. HAMMER.

BOTTLE CAP 0R CLOSURE.

APPLICATION FILED IULYIS. 1912.

1 ,160,982 Patented Nov. 16, 1915.

Attorney CHARLES HAMMER, 0F BROOKLYN, NEW YORK, ASSIGNOR TO THE AMERICAN METAL CAP COMPANY, OF BROOKLYN, NEW YORK.

BOTTLE CA]? GR CLOSURE.

Specification of Letters Patent.

Patented N ov. 16, 1915.

To all whom it may concern Be it known that I, CHARLES HAMMER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented a new and useful Bottle Cap or Closure, of which the following is a specification;

This invention relates to a bottle cap or closure.

The objects of the invention .are so to,

shape the bottle neck and the cap or closure as, first, to permit the cap to be made of very thin sheet metal; second, to cause a cooperation between the notches of the cap and the upper and lower surfaces of the threads of the bottle, whereby the threads will prevent distortion of the notches of the cap; third,

to arrange the notches and threads in such manner as to guide thecap accurately into place and prevent it from wabbling or crossing the threads while it is being screwed home; fourth, to provide for locking the cap tightly upon the threads after the cap has been screwed into closed position; and, fifth, to minimize the friction of theflange of the cap on the outer edges of the threads in screwing the cap into closed position.

With the foregoing and other objects in View, as will appear in the following description, my invention resides in the combination and arrangement of parts and in the details of the construction hereinafter set forth, and particularly pointed out in the appended claims. But I wish to have it understood that this specification is illustrative only and sets forth but one embodiment of my invention, and I reserve the right to make changes, in the shape, size and relative location of the parts that come within the scope and spirit of my invention andare included within the general meaning of the terms in which the claims are expressed. In other words, the differences in the wording of the claims are intended to cover diflerences in construction; and I desire the privilege of altering the details of my invention accordingly when such alteration is necessary.

In the accompanying drawing, forming part of this specification, Figure 1 is a vertical sectional view through a. portion of the upper end of the bottleneck andthe outer edge of the cap, the section being taken at a point through the center of one of the notches in the lower edge of the bottle cap,

as indicated by the line AB in Fig. 3; Fig. 2 is a section similar to Fig. 1 taken through the cap at a point away from one of the notches; Fig. 3 is a side elevation of a bottle cap constructed in accordance with the present invention; Fig. 4 is a bottom plan View of the cap shown in Fig. 3 on a reduced scale; Fig. 5 is a side elevation of a bottle neck showing the separated threads having flat bottoms and rounded tops to cooperate with the notches of the cap; Fig. dis a plan view of the bottle neck shown in Fig. 5; Fig. 7 is a vertical section through one edge of the cap taken on a line indicated by CD in Fig. 3, and showing the annularly and outwardly bulged portion of the flange with the outwardly extending corrugations in sa d bulged portion; Fig. 8 is a horizontal sectlon taken on a line indicated by 88 in Fig. 3; and Fig. 9 is a view on the line A'B of Fig. 3, showing the manner in which the arched notches are extended upward far enough to permit the lower ends of some of the corrugations to be extended or merged into said notches, whereby to brace the notches.

Like, reference numerals indicate corre sponding parts in the different figures of the drawings.

The reference numeral 1 in Fig. 5-indicates the bottle neck; 2 an annular shoulder on said neck; and 333 are separated spiral threads extending referably downward to the shoulder 2. he upper end of each thread 3 preferably is beveled in a horizontal plane, as indicated at 4 in Fig. 5, and is also beveled outwardly in a vertical plane, as indicated at 5 in Fig. 6.

The bottom, or lower surface of each of the separated threads 3 is formed flat, as shown at 6 in Figs. 1, 2 and 5, and the top or upper surface of each of said threads is curved upwardly and inwardly, as indicated at 7 in said figures. As will hereinafter appear, by forming the threads 3 with flat bottoms and curved or rounded tops, said threads are caused to conform to the shape of and cooperate with the arched notches of the cap, and thereby not only guide the cap accurately into position, but also lock it in closed position, and at the same time, provide for an effective bracing 0r reinforcing of the notches, whereby to permit the cap to be made of thin metal.

The cap 10 is formed preferably with a flat top and a depending annular flange. As shown best in Figs. 2 and 7, the annular flange of the cap 10 is formed with an upper portion 11 and a. lower portion 12, which are in the same vertical plane and said flange is also formed with an intermediate portion 13 which is rolled or bulged outwardly. This bulged portion 13 in turn, is

formed with outwardly extending vertically arranged corrugations 14.

' Formed in the lower edge of the flange of the bottle cap is a plurality of upwardly and inwardly arched notches 16, the number of notches 16 being equal to the number of separated threads 3. As indicated in Figs. 1 and 9, the notches 16 are extended upward from the lower edge of the cap, far

enough to cause the lower ends of the adjacent corrugations 14 to be extended or merged into the highest portion or the crown of the arch. By means of this construction, it is found in practice that the corrugations lend strength to the notches. It will also be seen that the highest portion or crown of the arch extends inward in practically a horizontal plane, as shown at 17, in Figs. 1 and 9. This 7 horizontal portion 17 lies parallel with and flat against the flat bottom 6 of the adjacent thread 3. The downwardly and outwardly curved lower edge portion 18 of each notch 16, as shown in Fig. 9, bears against and rides along the curved top or surface of the lower thread 3. The horizontal portion 17 of the notch, as shown in Fig; 1, is extended inward far enough to engage theouter wall 20 of the bottle neck at a point, between the separated threads. 7

From the foregoing, it will be apparent that by striking the arched notches upward in the manner indicated, said notches serve to guide the cap during its turning movement on the bottle, by reason of the fact that the horizontal portion 17 at the top of each I notch fits against the flat bottom of onev ward movement of the cap on the bottle neck, and hold it at all times in proper position on said bottle neck. It will also be observed that the outwardly bulged Portion 13 having the corrugations 14 therein, is spaced away from the outer portions of the threads 6, as best indicated in Fig. 2, with the result that the friction between the flange of the cap and the'threads is minimized. 7

Byso shaping the notches of the cap and the threads of the bottle that they cooperate with each other, asabove described, a further important advantage is secured, in that after the bottle cap has been screwed down to a point where the flat top of the cap binds on or contacts with the top edge of the bottle neck, a continued turning movement'oi the cap causes the portion 17 of the notches 16 to give this downward distortion causes the downwardly and outwardly curved edges 18 of the notches 16 to bite or bind tightly downward on the curved upper surface 7 of the next lower thread, and thus lock the cap on the bottle, at the same time bracing the notches against any further distortion than is necessary to lock the cap, as above described. This biting or binding of the edge 18 on the curved upper surface 7 of the lower thread effectually prevents the cap from working loose from the bottle or jar in transportation and the coiip'eration between the flat bottom and curved top threads of the bottle and the peculiarly formed notches of the cap,'permits the cap to be manufactured at small expense from very thin metal, and to be easily. and quickly fitted onto the bottle andscrewed into closed position. What is claimed is:

' 1. The combination of a bottle or jar having separated threads formed with flatbottoms and rounded tops, said threads partially overlapping each other so that portions of the flat bottom of each threadare above the rounded upper surfaces of portions of an adjoining thread, and a bottle cap' having a depending flange formed at its lower edge with inwardly extending arched notches, the top of each notch being substantially parallel with the top of the cap and engaging the flat bottom of one thread and extending inwardly approximately to the outer surface of the bottle or jar between the threads, the lower edge of each notch engaging and substantially conforming in shape to the curved top of the next lower thread.

2. A bottle cap having a depending flange formed with an outwardly bulged portion havlng outwardly extending corrugations therein, and notches extending upward from the lower edge of said flange, the lower portionsof said corrugations and bulged port1on being merged into said notches to brace the same.

3. The combination of a bottle having separated' threads formed with flat bottoms and curved tops, of a cap having adepending flange formed with in-struck notches, the top of each of said notches being substantially parallel with the top of the cap and engagmg the flat bottom of the adjacent thread and extending inward approximately to the outer surface of the bottle between the threads, the lower edge of each notch engaglng and, conforming in shape to the curved top of the next lower thread, whereby said notches prevent upward, downward, and inward displacement of the cap.

or distort slightly downward and .said notches serving further ,in closed position on the jar.

4. A jar having a shoulder, a plurality of separated threads running down to said shoulder, each thread having a flat bottom and a curved top, the upper end of each thread being beveled in a horizontal and vertical plane, a cap mounted on said threads and having notches arranged to conform to the tops and bottoms of the adjacent threads, said notches being extended upward from the lower edge of the cap .and having horizontal upper portions lying parallel with the flat bottoms of the adjacent threads and extending inward far enough'to engage the outer surfaces of the jar at points between the threads, the lower edges of said notches extending downwardly and outwardly and being adapted to contact with the curved tops of the lower threads, said cap having in the flange thereof an outwardly bulged portion, formed with outwardly extending corrugations, thlower ends of some of said corrugations being merged into said inwardly extending notches, said outwardly bulged portion serving to prevent friction on the threads of the jar, and said notches serving to guide the cap in its turning movement on the jar and preventing upward, downward or inward displacement thereof, to bind the cap 5. The combination of a bottle or jar having separated partially overlapping threads each formed with a fiat bottom and a rounded top, and a bottle cap having a depending flange formed with inwardly extending arched notches having free lower edges, the upper edge of each notch engaging the flat lower surface of one thread, and the-free and lower edges of each notch. adjacent the end portions of the notch engaging the curved upper surface of the next adjacent thread.

6. 'A closure for a storage vessel comprising a top and a flange having inwardly extending arched notches, each notch comprising a crown portion substantially parallel with the top, and portionsconnected with the crown portion and having edges curving away from said top.

75 A closure for a storage vessel comprising: atop and a flange having inwardly extending arched notches, each notch comprising='a crown portion substantially parallel with the top, and portions connected with the crown portion and having edges curving away from the top, said flange also having a bulged portion provided with corrugations,

said notches merging with said corrugations.

8 A closure for a storage vessel comprising a top, and a flange having inwardly extending projections, each projection having a portion substantially parallel with the top, and a portion extending away from the top and outward radially.

9. The combination of a storage vessel 'having overlapping threads with flat bottoms and roundedtops, and a cap having a flange provided with inwardly. extending.

projections, each projection having a straight portion to engage the flat bottom of a thread and a portion conforming in shape to the rounded portion of an adjacent thread.

In testimony that I claim they foregoing as my own, I have hereto affixed my signature in the presenceof two witnesses.

- CHARLES HAMMER. Witnesses:

THOMAS T. UREN, CHRISTIAN H. UREN. 

